Dare I suggest Code Geass R3/Nightmare of Nunnaly?
That's a little too speculative. While S&W2 hasn't actually been confirmed for Summer, the producers have indicated that the series will continue shortly after the release of the OVA. And the timing, right after the second run of the first season, along with all of the cryptic ads for the second, is right for Haruhi 2. Code Geass 3 is just a pipe dream.
I've got to agree. Code Geass 3 just can't happen. I know that suggestions are abound in CG R2 that Lelouch wouldn't actually die (even if you killed him...), and there have been a ludicrous amount of rumors (and shooped pictures) that hes the one driving the cart that C.C rides on at the end. But unless Sunrise is going to go for a filthy cash grab then CG 3 just doesn't seem likely, CG 2 tied up pretty nicely and I think that the series is most poignant if you just accept that Lelouch dies. Hes kind of a tragic hero that way, in his death he atones for a great deal, and bringing him back (which CG 3 SURELY WOULD) would detract from that. Imagine if another Cowboy Bebop came out and
Spike had somehow survived his battle with Vicious.
As for what I'm looking forward to in Spring, continuing with Hajime no Ippo - New Challenger of course, but for new stuff I'm going to check out Cobra and Guin Saga (haven't seen a fantasy show in a while, might as well try it). And I'm shamefully looking foward to DBZ remastered, if not only for the nostalgia value. Its been about a decade, after all, since I bought Freiza saga subs on VHS tape from a sketchy seller over E-Bay, and tried in vain to understand Spanish dubs of DBZ on the international channel, how was I supposed to know who Cell was? That was the dial up days! Ah... The old days.
kureshii-edit: use spoiler tags next time